Answer Happy

A U.S. census bureau pollster noted that in 362 random households surveyed, 263 occupants owned their own home. For a 95% confidence interval for the proportion of home owners, what is the margin of error? 1) 0.0459 2) 0.0011 3) 0.0024 4) 0.0384 5) 0.0234

You are contacted by a phone-in technical support business that is interested in some information about the amount of time their customers spend on hold. You find out that on average, each caller spends 11.12 minutes on hold with a standard deviation of 2.21 minutes. If you were to take a random sample of 68 callers, you would expect 77% of the time the average hold time would be less than how many minutes? 1) 9.49 2) There is not enough information to determine this. 3) 11.32 4) 10.92 5) 12.75